25 points for this question
simplify the expression:

the answer must be in this format (simplifed expression and

What’s the equation you are trying to solve to get x?

than do 23.50 times 18 and then divide your answer by 100 than you will get x.

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.